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The European Community has fulfilled its obligations from the first period of the Kyoto Protocol, as total GHG emissions in the first commitment period 2008–2012, with no sinks taken into account, were approximately 19% below the base year values. By imposing the maximum level of allowed sinks, Slovenia has exceeded the goal by about 3%.

In 2017, Slovenian GHG emissions slightly decreased and were by 1.3% lower than in 2016. Therefore, Slovenia is on track to achieve the EU goal, as non-ETS GHG emissions in 2017 were about 10.8% below the allocated emissions for 2017.


Temperature in Slovenia increases faster than global average. Increase in the annual average temperature is most evident in last three decades. Warming of atmosphere will continue according to the climate change projections. The result of warming is an increase in sea level (due to melting of glaciers), increase in level of the greenhouse gases in atmosphere (contributes to warming), and many extreme weather and climate events (like floods, droughts, hail and heavy wind), what will result in the quality of our lives.


The quick rate of retreat of the Triglav Glacier, which began in the second half of the 20thcentury, further accelerated till the beginning of the 21st century. Due to increasing intensity of ice thinning, outcropping rocks began to emerge in the middle of the glacier, which disintegrated into two parts in 1992. In the last part of the first decade of the 21st century, the glacier has been retreating at a slower rate. The last major recession of the glacier was registered after the above average hot summer of 2003.


According to data available for Europe, the annual growing season has been lengthening, more intensively in northern and eastern Europe than in western and southern Europe and in the Mediterranean region (also in Slovenia). The lengthening of the growing season is expected to continue throughout Europe. Lengthening of the annual growing season will allow northward expansion of warm-season crops to areas that were not previously suitable while in the southern Europe the warmer conditions will allow the growing season to extend into winter.


Temperature observations show the trend of increasing maximum and minimum absolute temperatures in the period 1961–2015, which indicates global warming. The number of hot days is increasing, including the frequency of extremely hot days with daily maximum temperature above 35 °C. In the summer of 2013, the highest temperature ever recorded in Slovenia was measured for the second time in history, while local temperature records were broken at several temperature measurement sites. The number of days with temperatures below zero shows a decline.


Total greenhouse gas emissions will increase in Slovenia up to 2020 (in relation to 2015 data). After 2020, levels will decrease. GHG emissions not included in the ETS are according to current projections up 2020 significantly lower than the target values.


In the period 2002-2017, the highest exposure to ozone concentrations were detected in the Primorska region in summer where air quality measuring stations in Koper and Nova Gorica detected highest ozone concentrations in ambient air. There are some differences from year to year in a level of ozone exposure due to meteorological conditions in the warm half of the year and other regional characteristics.